Duty Time Rated Motors

It is possible to supply squirrel cage motors in frame sizes that are different from the normal if they are duty time rated. If you refer to AS1359.30 it lists the following duty time rated classifications:

S1 Continuous running duty

S2 Short Time duty

S3 Intermittent periodic duty with insignificant starting time

S4 Intermittent periodic duty with significant starting time

S5 Intermittent periodic duty with electric braking

S6 Continuous operation duty.

S7 Continuous operation duty with electric braking

S8 Continuos operation duty with related load-speed changes

S9 Non-periodic Duty with load and speed changes.

If you have an application that requires a duty time rated motor please contact Western Electric with all relevant details and we will supply a motor that will suit your application.